Remove NestedTensorFactories.h (#133809)

Since it has no code.

Pull Request resolved: https://github.com/pytorch/pytorch/pull/133809
Approved by: https://github.com/ezyang

aten/src/ATen/native/nested/NestedTensorFactories.cpp

@@ -1,6 +1,5 @@
 #include <ATen/ATen.h>
 #include <ATen/NestedTensorImpl.h>
-#include <ATen/native/nested/NestedTensorFactories.h>
 #include <ATen/native/nested/NestedTensorUtils.h>
 
 

aten/src/ATen/native/nested/NestedTensorFactories.h

@@ -1 +0,0 @@
-#pragma once

aten/src/ATen/native/nested/README.md

@@ -22,7 +22,7 @@ The NestedTensor code is split into two parts: the C++ code and the Python code.
 - `NestedTensorUtils.h | NestedTensorUtils.cpp`: Utility functions for working with NestedTensors. (This is where you will find  `map_nested_tensor` which is discussed below in the section on implementing new functions.)
 - `NestedTensorUnaryOps.cpp`: Unary operations on NestedTensors (functions that can be efficiently implemented via map_nt)
 - `NestedTensorBinaryOps.h | NestedTensorBinaryOps.cpp`: Binary operations on NestedTensors (functions that can be efficiently implemented via NestedTensor_elementwise_Tensor which can be found in the cpp file)
-- `NestedTensorFactories.h | NestedTensorFactories.cpp`: Functions for creating NestedTensors (e.g. empty_like)
+- `NestedTensorFactories.cpp`: Functions for creating NestedTensors (e.g. empty_like)
 - `NestedTensorMath.h | NestedTensorMath.cpp`: Math functions on NestedTensors (e.g. softmax, embedding)
 - `NestedTensorMatmul.cpp`: Matmul functions on NestedTensors (e.g. matmul, linear, bmm)
 - `NestedTensorTransformerFunctions.h | NestedTensorTransformerFunctions.cpp`: Functions for enabling the BetterTransformer work stream